Regensburg 2010 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 66: Nanotribology I
O 66.5: Vortrag
Donnerstag, 25. März 2010, 11:30–11:45, H36
Large-scale MD simulations of the contact and sliding of nanoscale metallic asperities — •Joël Peguiron1 and Michael Moseler1,2 — 1Fraunhofer-Institut für Werkstoffmechanik IWM, Wöhlerstraße 11, 79108 Freiburg — 2Physikalisches Institut, Albert-Ludwigs Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg
Molecular dynamics simulations of the tribology of nanoscale gold contacts are reported. Contact formation, sliding, and fracture between two asperities are investigated, bearing special interest on the mechanisms of material flow underlying these processes. In particular, the formation of long atomic chains, a known property of gold, is observed. The influence of the presence of a liquid lubricant is also explored. Large-scale simulations (hundreds of thousands atoms) are set up in order to make one step further, with respect to earlier works, towards connection with experiments from the literature.